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Webster 1913 Edition

Noun.

(Min.)

A hydrous sulphate of iron of a green color and vitreous luster; iron vitriol.

See also: melanterite

Melanterite m

See also: Melanterite

melanterite ‎(countable and uncountable, plural melanterites)

(mineralogy) a widespread green, mostly fibrous mineral composed of hydrated ferrous sulphate

mineral